Disposable half-mask respirator

General information

Disposable Half Mask Respirator

General information

  • Half masks cover the nose, mouth and chin.
  • They are supplied in different shapes and sizes.
  • This type relies on the wearer's breathing to pull the air through the filter.
  • Some models may have an outlet valve, providing improved comfort for the wearer.
  • Disposable half-mask respirators are uncomfortable to wear continuously for more than 1 hour.
  • They can be made with Low efficiency (P1), Medium efficiency (P2) or High efficiency (P3) particle filters.
  • R-marked types: as a practical measure, do not use for more than three days unless advised by the manufacturer.
  • This RPE is designed for a single shift and should be thrown away at the end of the task, shift or day. However, some newer models may be reused, marked R on the RPE.
  • They are all right for light work (work activity when seated) and medium work rate (work activity involving sustained hand and arm movements, or similar to brisk walking).


  • Fit the straps as recommended.
  • Train users to use the RPE correctly.
  • Select the right size mask for each wearer.
  • Select the right efficiency filter for your substance.
  • Fit-test for each wearer when using this RPE for the first time.
  • Ensure that wearers check the RPE fits correctly every time, as recommended by the manufacturer.


  • Store in dirty areas.
  • Get dirt inside the mask.
  • Make DIY modifications to the RPE.
  • Use against gases or solvent vapours.
  • Use a damaged respirator – filtering surface, straps or valve.
  • Use in oxygen-deficient atmospheres, for example confined spaces.
  • Use a P1 filter against fume unless recommended by the manufacturer.

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